From f3a519393ad1747849043e62ee58d65a6b73ea63 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Mon, 4 Sep 2017 19:12:44 -0400
Subject: nslcd_systemd: backoff on temporary net errors

The logic for backof size is based on the net/http server.
---
 nslcd_systemd/nslcd_systemd.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/nslcd_systemd/nslcd_systemd.go b/nslcd_systemd/nslcd_systemd.go
index 2839af4..0856b70 100644
--- a/nslcd_systemd/nslcd_systemd.go
+++ b/nslcd_systemd/nslcd_systemd.go
@@ -38,6 +38,7 @@ import (
 	"os"
 	"os/signal"
 	"sync"
+	"time"
 
 	"git.lukeshu.com/go/libnslcd/nslcd_server"
 	"git.lukeshu.com/go/libsystemd/sd_daemon"
@@ -136,6 +137,7 @@ func Main(backend Backend) uint8 {
 		defer sd_daemon.Recover()
 		defer wg.Done()
 
+		var tempDelay time.Duration
 		last := false
 		for !last {
 			conn, err := socket.Accept()
@@ -144,6 +146,15 @@ func Main(backend Backend) uint8 {
 					last = true
 				} else if ne, ok := err.(net.Error); ok && ne.Temporary() {
 					sd_daemon.Log.Notice(fmt.Sprintf("%v", err))
+					if tempDelay == 0 {
+						tempDelay = 5 * time.Millisecond
+					} else {
+						tempDelay *= 2
+					}
+					if max := 1 * time.Second; tempDelay > max {
+						tempDelay = max
+					}
+					time.Sleep(tempDelay)
 				} else {
 					socket_error <- err
 					last = true
-- 
cgit v1.2.3